App may not be compatible with cm10 yet. Hard to tie down unless you want to go playing with the phone for a couple of hours.
Let us know how you get on with renaming an mp3.I'm not sure whether permissions on the MP3 may need changing.
Im thinking it may be a bug. The build prop would say use xxxxxxxxx as stock ringtone and then your setting a different file. Did you use an app to change to an mp3 ringtone? App bug possible?
Im not sure if the buildprop would change to reflect your use of mp3 files but I always suspected it was the use of mp3's causing the issue.
Anyway glad your sorted out.
Android sound tones are .ogg files right? I wonder would renaming the mp3 ringtone to say Thriller.ogg for example fix it? It may need moving to the ringtone file location in system also. Not too much work to try really, just backup before hand.
But I didn't recommend anything, I answered his question on how he would flash a stock rom, not a repack of a stock rom. If Vodafone would accept a repack in a warranty return then I see your point but they won't so stock is an update.app and a repack is based on stock. I answered the question as it was asked, not as I presumed it was asked.
Well you were using music ringtone as in mp3 ringtones if I recall. Something could have gone wrong there. I would try a clean install. if it doesn't fix it, you still have your nandroid.
Yes the nandroid would copy the problem so nandroid restore would put up back to square one.